MUMBAI : Maharashtra Chief Minister Uddhav Thackeray on Wednesday said the COVID-19 threat still persists though restrictions have been partially eased to allow resumption of business and other activities.Urging people to avoid crowding and maintain physical distancing post easing of lockdown norms under "Mission Begin Again', he reiterated his demand for resumption of suburban train services in Mumbai for movement of staff on essential services duty.Thackeray hinted the coronavirus-induced lockdown, currently in force till June 30, will have to be extended if guidelines related to it are not followed strictly by people.Addressing a press conference after a meeting of the Business Advisory Committee (BAC) of the state legislature, he said.